FIELD: building industry. SUBSTANCE: concrete comprises portland cement, concrete claydite gravel, sand, water and gypsum which is lactic acid production waste containing 83-95% of CaSO4•2H2O, ratios of components being as follows, wt %: portland cement, 14.6-18.5: concrete claydite, 56.3-57.6; sand, 9.4-9.6; gypsum slurry, 7.7- 15.4; and water, the balance. EFFECT: improved easy placability of concrete mix, wider range of stock material due to using lactic acid production waste. 1 tbl
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Authors
Dates
2000-05-27—Published
1998-10-13—Filed